Halogen

6 elements

The most reactive and electronegative element. Reacts with almost every other el...

Yellow-green gas with a choking smell. Used to purify drinking water worldwide, ...

One of only two elements liquid at room temperature, the other being mercury. Re...

Essential for thyroid hormone production. Iodine deficiency causes goiter and is...

The rarest naturally occurring element on Earth. At any moment the entire planet...

Named after Tennessee, honoring the Oak Ridge and Vanderbilt scientists who help...